<template>
  <section class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">老王外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{on: loginWay}" @click="loginWay=true">密码登录</a>
          <a href="javascript:;" :class="{on: !loginWay}" @click="loginWay=false">短信登录</a>
        </div>
      </div>
      <div class="login_content">
        <form @submit.prevent="login">
          <div :class="{on: loginWay}">
            <section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="手机/邮箱/用户名" v-model="name"/>
              </section>
              <section class="login_verification">
                <input type="text" maxlength="8" placeholder="密码" v-if="showPwd" v-model="pwd"/>
                <input type="password" maxlength="8" placeholder="密码" v-else v-model="pwd"/>
                <div class="switch_button" :class="showPwd?'on':'off'" @click="showPwd=!showPwd">
                  <div class="switch_circle" :class="{right: showPwd}"></div>
                  <span class="switch_text">{{showPwd? 'abc' : '...'}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha" />
                <img
                  class="get_verification"
                  src="http://localhost:4000/captcha"
                  alt="captcha"
                  @click="getCaptcha"
                  ref="captcha"
                />
              </section>
            </section>
          </div>
          <div :class="{on: !loginWay}">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" />
              <button disabled="disabled" class="get_verification">
                获取验证码
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码" />
            </section>
            <section class="login_hint">
              温馨提示：未注册老王外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <button class="login_submit">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="$router.replace('/me')">
        <i class="iconfont icon-jiantou2"></i>
      </a>
    </div>

    <AlertTip :alertText="alertText" v-show="alertShow" @closeTip="closeTip"/>
  </section>
</template>

<script>
import AlertTip from '@/components/AlertTip/AlertTip.vue'
import {reqPwdLogin} from '@/api'

export default {
  data() {
    return {
      loginWay: true, //true代表密码登录，false代表短信登录
      showPwd: false, //是否显示密码
      name:'', //账号
      pwd:'', //密码
      captcha:'', //图形验证码
      alertShow: false, //是否显示提示框
      alertText:'', //提示文本
    };
  },
  components:{
    AlertTip
  },
  methods:{
    //显示提示框
    showAlert(alertText){
      this.alertText = alertText
      this.alertShow = true
    },
    //异步登录
    async login(){
      let result
      //密码登录
      if(this.loginWay){
        const {name, pwd, captcha} = this
        if(!this.name){

          this.showAlert('账号必须指定')
        } else if(!this.pwd){

          this.showAlert('密码必须指定')
        }else if(!this.captcha){
          this.showAlert('验证码必须指定')
        }
        result = await reqPwdLogin({name, pwd, captcha})
        
      }else{

      }
      //结果数据处理
      if(result.code===0){
          const user = result.data
          //保存用户信息
          this.$store.dispatch('recordUser', user)
          //跳转页面
          this.$router.replace('/me')
        }else{
          //显示新的图片验证码
          this.getCaptcha()
          //显示提示
          const msg = result.msg
          this.showAlert(msg)
        }
    },
    //关闭提示框
    closeTip(){
      this.alertShow = false
      this.alertText = ''
    },
    //获取新的图片验证码
    getCaptcha(){
      this.$refs.captcha.src = 'http://localhost:4000/captcha?time='+Date.now()
    }
  }
};
</script>

<style lang="stylus" scoped>
    @import "../../common/stylus/mixins.styl"
    .loginContainer
      width 100%
      height 100%
      background #fff
      .loginInner
        padding-top 60px
        width 80%
        margin 0 auto
        .login_header
          .login_logo
            font-size 40px
            font-weight bold
            color #02a774
            text-align center
          .login_header_title
            padding-top 40px
            text-align center
            >a
              color #333
              font-size 14px
              padding-bottom 4px
              &:first-child
                margin-right 40px
              &.on
                color #02a774
                font-weight 700
                border-bottom 2px solid #02a774
        .login_content
          >form
            >div
              display none
              &.on
                display block
              input
                width 100%
                height 100%
                padding-left 10px
                box-sizing border-box
                border 1px solid #ddd
                border-radius 4px
                outline 0
                font 400 14px Arial
                &:focus
                  border 1px solid #02a774
              .login_message
                position relative
                margin-top 16px
                height 48px
                font-size 14px
                background #fff
                .get_verification
                  position absolute
                  top 50%
                  right 10px
                  transform translateY(-50%)
                  border 0
                  color #ccc
                  font-size 14px
                  background transparent
              .login_verification
                position relative
                margin-top 16px
                height 48px
                font-size 14px
                background #fff
                .switch_button
                  font-size 12px
                  border 1px solid #ddd
                  border-radius 8px
                  transition background-color .3s,border-color .3s
                  padding 0 6px
                  width 30px
                  height 16px
                  line-height 16px
                  color #fff
                  position absolute
                  top 50%
                  right 10px
                  transform translateY(-50%)
                  &.off
                    background #fff
                    .switch_text
                      float right
                      color #ddd
                  &.on
                    background #02a774
                  >.switch_circle
                    position absolute
                    top -1px
                    left -1px
                    width 16px
                    height 16px
                    border 1px solid #ddd
                    border-radius 50%
                    background #fff
                    box-shadow 0 2px 4px 0 rgba(0,0,0,.1)
                    transition transform .3s
                    &.right
                      transform translateX(30px)
              .login_hint
                margin-top 12px
                color #999
                font-size 14px
                line-height 20px
                >a
                  color #02a774
            .login_submit
              display block
              width 100%
              height 42px
              margin-top 30px
              border-radius 4px
              background #4cd96f
              color #fff
              text-align center
              font-size 16px
              line-height 42px
              border 0
          .about_us
            display block
            font-size 12px
            margin-top 20px
            text-align center
            color #999
        .go_back
          position absolute
          top 5px
          left 5px
          width 30px
          height 30px
          >.iconfont
            font-size 20px
            color #999
</style>